T6 whistle at start up?

[goingeurocar]

I just got the car and you guys have helped with a couple of other questions which I appreciate. Thanks.

I have a high pitched whistle at fast idle cold start.

Seems looking around Mr google that it may be a clogged oil trap which on my 3.0 is the black plastic thing on top? Mine is a 2011 T6 turbo.

I checked the star nuts as there was a little oil around the base and found them to be loose indicating someone else may have been in there before.

Is there any way it could be something else?

I hate to throw a bunch of money at a part without some way of checking if it's at fault?

The car only has 26000ks on it so this seems a bit premature but it's been city driven I think.

I also would like to know where my pcv valve is with some certainty?

Is there an engine schematic for this someplace?

Cheers.

[EWAC]

Originally Posted by goingeurocar

I just got the car and you guys have helped with a couple of other questions which I appreciate. Thanks.

I have a high pitched whistle at fast idle cold start.

Seems looking around Mr google that it may be a clogged oil trap which on my 3.0 is the black plastic thing on top? Mine is a 2011 T6 turbo.

I checked the star nuts as there was a little oil around the base and found them to be loose indicating someone else may have been in there before.

Is there any way it could be something else?

I hate to throw a bunch of money at a part without some way of checking if it's at fault?

The car only has 26000ks on it so this seems a bit premature but it's been city driven I think.

I also would like to know where my pcv valve is with some certainty?

Is there an engine schematic for this someplace?

Cheers.

Whistle on startup, if high pitched and only lasts for a few seconds is likely to be the oil trap.
The PCV is with the oil trap, its all one unit.

You may be able to get away with removing the whole trap, clean and replace. BUT! If its v60, its a bugger to get off at you ideally need to remove the cold air intake pipe from airbox, which is a right mission. So if you are taking it off, you might as well replace the whole unit or gasket, as you won't want to be doing it again .

[goingeurocar]

Hi Ewac. I appreciate your input. Yes it is a V60. I had thought it was the oil trap/pcv from some research but wasn't even positive that round thing was the pvc yet.
I did the glove test for blow by which it passed so thought maybe not that. I have a feeling cold start is a different deal?
In the interim I ordered a new part so I could study it and replace if needed.
Interestingly someone had loosened most but not all of the star bolts holding it on and some were left finger tight at best. I wonder if they were beaten by the cold air pipe which just looking at scares me!
Maybe it's a push fit into the join behind the engine? I worry about getting it back on again as well...
Would be easy to get the pcv off if the pipe wasn't there and it would be easy to get the pipe off if the pcv wasn't there!
I simply love driving the car and the one I got is like new so it's sad to have to play with it right away.
I did drive a V60 Polstar which was a blast but our roads are kinda suck and that made the call...Have you replaced your pcv? Would love to get a run down from someone who has.
I am considering fitting a catch can between the pcv and intake? Would be better if it was before the pcv to protect it but would still keep anything getting past from going back through the engine.
Any thoughts?
Cheers.

[EWAC]

Originally Posted by goingeurocar

Hi Ewac. I appreciate your input. Yes it is a V60. I had thought it was the oil trap/pcv from some research but wasn't even positive that round thing was the pvc yet.
I did the glove test for blow by which it passed so thought maybe not that. I have a feeling cold start is a different deal?
In the interim I ordered a new part so I could study it and replace if needed.
Interestingly someone had loosened most but not all of the star bolts holding it on and some were left finger tight at best. I wonder if they were beaten by the cold air pipe which just looking at scares me!
Maybe it's a push fit into the join behind the engine? I worry about getting it back on again as well...
Would be easy to get the pcv off if the pipe wasn't there and it would be easy to get the pipe off if the pcv wasn't there!
I simply love driving the car and the one I got is like new so it's sad to have to play with it right away.
I did drive a V60 Polstar which was a blast but our roads are kinda suck and that made the call...Have you replaced your pcv? Would love to get a run down from someone who has.
I am considering fitting a catch can between the pcv and intake? Would be better if it was before the pcv to protect it but would still keep anything getting past from going back through the engine.
Any thoughts?
Cheers.

Removing the intake pipe is the difficult bit. When it's out of the way, the oil trap is easy to remove and access.
The intake pipe fits into a resonator on back of the engine and is secured by a jubilee clip. I think you are meant to remove the firewall first to gain access. I managed to do it without but is very fiddly and you WILL crave your hand up.
I have a 3 yr old 3.0ltr Polestar so oil trap is ok. I had to replace the intake pipe, so know how difficult it is to remove and while out it, made sure oil trap was clean and clear.
Catch can would be good if it not standard, otherwise, it will be fine if serviced regularly.

[goingeurocar]

Thanks again.

I had a look at some of your posts and hope you have cleared up your sound issues?

That polestar sure is a special ride.

I am surprised my pcv is bad with so few miles but it may be the lack of miles that has caused the problem.

I am pretty good around cars so hope to do as you did and not remove the fire wall (holy crap)!

I plan to replace the trap anyway at this point to start from a level playing field so to speak.

When I fit a catch can I will do a report here someplace for other owners.....I want one with a relief valve which are harder to find but does away with any chance of a pressure build in the system.

There is one out of Germany that may fit the bill...

Was the inside of your intake pipe clean?

Why did it need to be replaced?

Sorry to ask so many questions but you are the first person to respond.

[EWAC]

Originally Posted by goingeurocar

Thanks again.

I had a look at some of your posts and hope you have cleared up your sound issues?


When I fit a catch can I will do a report here someplace for other owners.....I want one with a relief valve which are harder to find but does away with any chance of a pressure build in the system.

There is one out of Germany that may fit the bill...

Was the inside of your intake pipe clean?

Why did it need to be replaced?

.

Sound issues kinda sorted after 2.5yrs pushing volvo. Michelin have released Acoustic tyres for my model which volvo fit as standard now. However, Volvo swear blind its not for this lol

Intake pipe was clean with a minor bit of oil, which is to be expected if your running 408hp .
I change the intake pipe for a kevlar effect, which hopefully the attached picture works so you can see it....

I have a catch can, but never fitted it as space is limited and want it looking neat.
Do you have a link for the German one?

[goingeurocar]

Wow! that Kevlar look is awesome! Looks like the pipe is poured in and is still liquid...

I can't see you using a catch can that is not perfect visually either after seeing that engine bay.

I am going to have to spend a lot of time on hose routing just to keep it tidy let alone the kind of non invasive fit you would require.

The one I like the most is by Mann (looks ugly) who are diesel people as you may know.

But the small one (pro vent 100) is rated up to 100kw not sure why and that's the one I lean towards and the 200 is perfect but has big (huge) hose fittings and would need to be reduced so much for my engine that I don't know if it's possible to make it look tidy. I am aware that the can fittings should be at least as large as the current hose size and bigger is better but there is a limit I feel.
These are designed to go on diesels with lots of blow by but overkill is not a problem in my mind?

I like the Mishimoto ones also as they are far more attractive but the reservoir is so small on them. They have proper baffles but no pressure relief valve in case something clogs or you forget to empty it (which I would not but still)....

There is no way I would ever drop the captured oil back in the sump like some designs!
Can't imagine doing that no matter what anyone says.

Last, why is it that our elected officials and company's we buy product off often have a default setting of never admitting wrong doing and lying to your face if deemed helpful to that end. It's a world wide epidemic and using the current U.S president as an example is from the top down. They should not sell someone a great car and risk spoiling that by being obtuse and adversarial when mistakes happen. How can that culture be reversed I wonder?

[goingeurocar]

Originally Posted by EWAC

Sound issues kinda sorted after 2.5yrs pushing volvo. Michelin have released Acoustic tyres for my model which volvo fit as standard now. However, Volvo swear blind its not for this lol

Intake pipe was clean with a minor bit of oil, which is to be expected if your running 408hp .
I change the intake pipe for a kevlar effect, which hopefully the attached picture works so you can see it....

I have a catch can, but never fitted it as space is limited and want it looking neat.
Do you have a link for the German one?

I went with a Mishimoto can in the end. The Mann one has way to large hose connections.
The can I ordered is a MMBB-UNi-RD (my car is passion red).
It's a good bit larger in terms of storage than the much less expensive Baffled mini can they sell.
I am a bit concerned about the water that goes in there at startup and if it stays trapped how quickly it can fill the small one so I opted for the new larger one.
The circumference is 3" on this one and using a water bottle of the same size I was able to be fairly sure I can mount it in the front right corner looking from the front of the car into the engine bay.
There is room behind the fan before the engine I believe.
Hose routing looks pretty simple as they can run under the cover to the can.
The can itself is supposed to be very nice quality but the hose supplied looks like junk.
Also there is no drain on this can as the baffle is supported by a pole that runs up the center from the bottom where the drain would be.
I plan to fit a drain myself off center and leave the baffle in place undisturbed.
The height of the thing is 6".
I expect to swap the top fitting to a 90deg but it's all up for change when I get the device.

https://www.mishimoto.com/mishimoto-...catch-can.html

Cheers.

[swerobvolvo]

Originally Posted by goingeurocar

I just got the car and you guys have helped with a couple of other questions which I appreciate. Thanks.

I have a high pitched whistle at fast idle cold start.

Seems looking around Mr google that it may be a clogged oil trap which on my 3.0 is the black plastic thing on top? Mine is a 2011 T6 turbo.

I checked the star nuts as there was a little oil around the base and found them to be loose indicating someone else may have been in there before.

Is there any way it could be something else?

I hate to throw a bunch of money at a part without some way of checking if it's at fault?

The car only has 26000ks on it so this seems a bit premature but it's been city driven I think.

I also would like to know where my pcv valve is with some certainty?

Is there an engine schematic for this someplace?

Cheers.

Hi,

Do you think my high pitched whistling noice on cold startups is the same as yours, and did changing the oil trap/pvc solve your problem?

https://www.volvoforums.org.uk/showthread.php?t=286178

[swerobvolvo]

Originally Posted by EWAC

Whistle on startup, if high pitched and only lasts for a few seconds is likely to be the oil trap.
The PCV is with the oil trap, its all one unit.

You may be able to get away with removing the whole trap, clean and replace. BUT! If its v60, its a bugger to get off at you ideally need to remove the cold air intake pipe from airbox, which is a right mission. So if you are taking it off, you might as well replace the whole unit or gasket, as you won't want to be doing it again .

Hi,

Do you think my high pitched whistling noice on cold startups is the oil trap/pvc?

https://www.volvoforums.org.uk/showthread.php?t=286178
swerobvolvo is offline